Shock-absorbing mechanism



1,512,927 s. B. HASELTINE sHocx ABsoRBING MECHANISM l Filed April so 1923 f @www MH.. l lh l I Patented Get. 28, 1924. 'l

reirse? oNiTsD STATES PATENT oFFicE.

STACY B. HAS'ELTINE, OF CHCAGO, ILLINOIS, ASSIGNOR, BY MESNE- ASSGiNMENTS,

TO XV. H. MINER,l INCA., A CORPORATION F DELAWARE. l

SHOCK-ABSORBING MECHANISM.

Application led April 30, 1923. Serial No. 635,518.

To all whom 'it may concermn Be it known that I, STACY B. HAsEL'rINn, a citizen of the United States, residing at Chicago, in the county of Cook and State of 6 Illinois, have invented a certain new and useful Improvement in Shock-Absorbing Mechanisms, of which the following `is a full, clear, concise, and exact description,A

both cushioning units will be compressedY under both buiiing and draft strains, and in which the customary intermediate stops or shoulders on the side plates or. stop castings may be dispensed with as well as the customary intermediate abutment block of the draw-bar yoke.

Another and more specific object of the invention is to provide a tandem shock absorbing mechanism, of the character indicated, wherein the front, rear, and intermediate follower elements are composed of a plurality of longitudinally arranged plates, the plates being arranged in two sets, one set co-acting with the rea-r end of the draw bar and the other with the rear end of the se yoke,

Other objects and advantages of the invention will more clearlyappear from the ,description and claims hereinafter yfollowing.

In the drawing forming a part of this specification, Fig. 1 is a vertical, longitudinal view of a portion of a railway draft rigging, taken along a line extending along the inner side of one of the draft sills, showing my improvements in connection therewith. Fig, 2 is a vertical, transverse, sectional view corresponding substantially to the line 2-2 of Fig. 1. And Fig. 3 is a plan view of one of the sections composing the rear follower. In said drawing, 10--10 denote channel shape center or draft sills of Y duplicates.

shoulder 26.

the car underframe, each of saiddraft sills having a front stop lug 11 and a rear stop lug l2 secured tothe inner face thereof. A portion of the-draw-bar is indicated at 13, and the same isY operatively connected to an ordinary single pocket yoke indicated at 14: by means of a transversely arranged key 15 extending through the draft sills and workmg in alined slots therein, one of said slots being indicated with dotted lines in Fig. 1. The shock absorbing mechanism proper is contained within the yoke' 14 and all the parts are supported in operative position by a saddle plate indicatedr in 16.y y

The improved shock absorbing mechanism, proper, as shown, comprises, broadly,

, a sectional front follower A; a sectional rear follower B 5 C and C.

and tandem arranged springs The sectional. front follower A is com-V lower plate-like section 18 andan intermediate plate-like section 19. Each of the platelike sections 17,-18and 19 are of rectangular shape, having flat front faces 20,721, and 22, respectively, adapted to abut the rear face 23 of the drawbar 13. The upper and lower sections 17 and 18 are of like construction, being reversely arranged and, preferably, Each of the sections 17' and 18 is provided with an inwardly extending reduced arm 24,' the arm 24k of the section 17 being upwardly offset with reference to the main portion of the section, thereby providing a shoulder 25, and the VarmY 24 of the lower section being downwardly offset with reference to the main portion of said section,y thereby providing a corresponding The intermediate section 19 is provided .with an inwardly extending arm 27y of releu rear ends and provided with fiat front end walls 34. The intermediate element 19 1s also provided with apair of longitudinally arranged openings and 36; the openings 35 being providedy with fiat, frontand rear, end walls 37 and 38 Vand longitudinally eX- tending side walls, the latter being curved onV their inner edges to correspond in curvature with the concave walls ofthe recesses rlhe opening 36 of the section 19 is open at the rear end thereof and has a flat front wall 39. As clearly shown in Fig. 1, the recesses 36 of the sections 17 and 18 and the opening 35 of the section 19 are in registration, having the front walls 32 and 37 in alinement and the rear walls 33and 38 also in alinement, thereby providing a spring receiving chamber adapted to house the spring resistance C with the opposite ends thereof abutting the said front and rear walls. The opening 36 in the'plate 19 1s 1n registration with the recesses 31 of the upper and lower plates 17 and 18 and the wall .39 is in alinement with the walls 34 of the `upper and lower elements 17 and 18 respectively, thereby providing a spring receiving chamber adapted to house the front end portion of the spring resistance C with the front end thereof inV abutment with the walls The sectional rear follower B consists of an upper section 40 and a lower section 41, the sections 40 and 41 being of like construction, )referably duplicates. Each of the sec, tions 40 and 41 is provided with a long1tu dinal forwardlyproj'ecting extension, comprising a pair of arms 42 located at opposite sides thereof and `connected by a transversely extending web 43 located between the body portion of the section and the outer ends of the arms 42. The arms 42 of the upper sectionV 40 are so arranged as to extend between the rearwardly projecting arm 27 of Vthe intermediate front follower section 19 and the Varm 24 of the section 17, and 'the arms 42 of the lower section 41 are adapted to extend between the arm 27 of the sec-V tion 19 andthe arm 24 of the section 18. Bothrthe upper'and lower sections 40 and 41 are recessed as indicated at 44 thereby providing counterpart spring receiving openings having flat, rear end walls 45 and curved upper and lower walls corresponding in curvature approximately to the curvature of the outer coiled spring of the spring resistance C. The longitudinal inner edges of the arms 42 are formed with transversely curved faces adapted to correspond with the curvature of the side walls .of the recesses 44 and are inV registration therewith. The web 43 connecting the arms 42 is formed with flat, front and rear faces forming abutment walls`46 and 47 respectively, adapted to co-act with the rear end of the .front spring resistance element C and the front lstop lugs 12.V

end ofthe rear spring resistance element C.

As clearly shown in Fig. 2, the lower face of the body portion of the upper section 40 is provided with an offset portion 48, therebyproviding a fla-t lower face 49, and a centrally located, vertical, longitudinally, eX- tending shoulder 50, and the lower section 41 has the upper face thereof provided with an upwardly offset portion 51, thereby provid- 'ing a fiat upper face 52 and a vertical, longi- The rear end faces 54 and 55 of the uwer" and lower sections 40 and 41 are adapted to abut the rear wall 56 of the yoke 14, and the walls 45, 46 and 47 of the upper section 40 are in alinement with the walls 45, 46 and 47 respectively, of the lower section, as

clearly'shown in Fig. 1.

yWhen the mechanism is fully released, the parts assume. the relative positions showny in Fig. 1, the front ends 20, 21 and 22 of the sections composing the front follower A'abutting the front stop lugs r11 and the rear face of the drawbar, and therear ends 54 and 55 of the sections composing` the rear follower B abutting the rear stop lugs 12 and the rear wall 56 of the yoke 14,

'the walls 33 and 38 of the sectional front followerbeing in alinement with the walls 46 of the sectional rear follower, and the walls 34 and 39 of the sectional front fol` lower being in alinement with the walls 47 of the sectional rear follower, thereby pro-- vi ding continuous abutments for the rear end of the spring resistance C and the front end of' the spring resistance C', respectively.

The operation of the mechanism is as'v follows, assuming an inward or bufng movement of the drawbar. The sectional front follower A will be moved rearwardly with the drawbar, while the sectional rear fol* lower B is held in fixed position by the rear The arms 24, and 27 ofthe front follower will slide rearwardly rela tively to the interposed arms of the rear follower, thereby compressing the spring C between the front follower walls 32, 37 `and the walls'46 on the webs 43 of the rear fol lower, and compressing the spring C." between the front follower walls 34, 39 and the rear follower walls 45. The relative sliding movement of the arms will continue until the shoulders 25, 26, 28, 29 and the rear ends of the arms of the sectional front follower A engage respectively, with the front ends of the arms of the rear follow er, and the shoulders 57 of the rear follower, thereby positively limiting the relative movement of the followers A and B before the tandem springs become solid, and transmitting the force directly through the followers to the stop lugs of the draft sills.

During draft, the act-ion is the reverse of that just described, the rear follower being mo-ved forwardly yand the front follower being held stationary by engagement with the front stop lugs 11.

Il pon the iactuating pressure being relieved, the springs C and C will -act to restore the front and rear followers to normal position., again bringing. the walls thereof into alinement.

It will be evident that the sections composing the front and rear followers may be very cheaply manufactured in the form of forgings or castings, land that the entire construction is exceedingly simple, especially since each section has only a single arm and only three different constructions of sections are required, the section 1'? bein@ a duplicate of the section 18 land t-he section 40 being a duplicate of the section 41.

It will also be evident that an exceedingly rigid abutment is provided by the followers when solid between the yoke and the draft lugs, the Jfollowers forming, in effect, a solid column or block, the only open space therein being that occupied by the springs.

I have herein shown and described what I now consider the preferred manner of carrying out the inventio-n,` but thesame is merely illustrative and I contemplate all changes and modifications that come within the scope of the claims appended hereto.

I claim:

1. In a tandem gear, the combination with a pair of pressure-transmitting elements,-

each of said elements comprising a plurality of longitudinallyA arranged sections, each of said sections being provided with a longitudinally arranged arm and an abutment means, the arms `associated with one of said elements extending between the arms associated with the other of said elements and each of said arms having` an abutment means near the free end thereof; of tandem arranged shock absorbing units, one of said units being interposed between the abutment ymeans of the sections of one of said elements and the abutment means of said arms, and the other of said units being interposed between the abutment means o-f the sections of the other of said elements and the abutment means of said arms.

2. In a tandem gear, the combination with front and rear followers each composed o-f a plurality of abutting sections; of a p-luality of inter-engaging pressureetransmitting elements, each of said elements being formed integral with a section of one of said and the intermediate follower acting means,

followers and y'having intermediate follower acting means thereon; and tandem. arranged shock absorbing units, one of said units being interposedbetween the front follower and the remaining unit being interposed between the intermediate follower acting means and the rear follower. f

3. In a tandem gear, the, combination with front and rear sectional followers; of a plurality of inter-engaging pressure transmitting elements, each ofsaid eleme-nts being formed integral with `a section of one of said followers and having intermediate follower acting means: thereon; and tandem arranged springs, one of said sprin being interposed between the front follower and the intermediate follower acting means, and the remaining spring being interposed between the intermediate follower acting means and the rear follower. Y

4. In a tandem gear7 the combination with front, rear and intermediate followers, each of said followers being composed of a. phirality of sections, the sections composing each of said front and rear followers being arranged in abutting relation, and the sections of'one of said intermedia-te followers being alternate with and interposed'between the sections of the other intermediatev follower; of means for rigidly connecting the sections forming oneof said intermediate followers with the sections forming the front follower; means for rigidly connecting the `sections forming the remaining intermediate follower and the ysections forming the rear follower; and tandem arranged springs, said springs being interposed between the front follower and the intermediate followers and between the intermediate followers and the rear follower, respectively.

5. In a tandem gear, the combination with front, rear and intermediate followers, each of said followers being composed of a plurality of sections, the sections of one of said intermediate followers being alternated with and interposed between the sections of the other intermediate follower; of means for rigidly connecting the sections of one of said intermediate followers with the sections forming the front follower; means for rigidly connecting the sections forming the remaining intermediate follower with the sections forming the rear follower; and tandem arranged spring units, said spring units being interposed between the front follower and the intermediate followers and between the intermediate followers and the rear follower, respectively.

6. In a tandem gear, the combination with a plurality of longitudinally arranged` pressure-transmitting elements, each of said elements comprising a body portion and an arm extending therefrom, saidA elements being arranged in two sets, the arms of one ico set being alternated with and interposed between the arms of the other set, and the body portions of each vset being in face to face contact; of abutment means on the body `portion of each element; additional abutment means on each element on the` arms thereof; and a spring resistance interposed between the first and second named abutment means of each set of elements.

7. In a shock absorbing mechanism,-the combination with front and rear followers, each of said followers,comprising a plurality of separable, superimposed sections, each section of each follower having an arm extending therefrom toward the other follower, the arms of one follower being alternated with the arms of the other follower; of cushioning means between said followers.

Y 8. In a tandem shock absorb-ing mechanism, the combination with front and rear followers, each follower comprising a plurality of separable sections, eachsection having an arm extending toward the o-ther fo'llower, said arms being alternated and Vprovided with recesses so arranged that, when the mechanism is in assembled relation tan- L dem arranged front and rear pockets ,are formed; of tandem arranged cushioning units, one disposed in each of said pockets.

9. In a tandem shock absorbing mechanism, the combination with front and rear followers; each follower comprising a plurality of separable sections, each section having an arm extending toward the other follower, said arms being alternated and pro- .Vlded with recesses so arranged that, when the mechanism is in assembled relation, tandem arranged front and rear pockets are formed; of tandemA arranged cushioning units, one disposed in each of said pockets; and means for limiting the relative approach of said followers.

l0. In a friction shock absorb-ing mechanism, the combination with fro-nt and rear followers ;v each follower comprisingaplurality of separable sections, each section having an arm extending toward the other follower, said arms being alternated and provided ywith recesses so arranged that when the mechanism is in assembled relation a plurality of pockets are formed; of a plurality of cushioning units, one disposed in each of said pockets. Y

l1. In a shock absorbing mechanism, the combination with front and rear followers having overlapping interengaging arms, provided with recesses so arranged that when the mechanism is in assembled relation, a plurality of pockets are formed, a plurality of said arms extending from each of said followers, eachof said followers comprising separable sections, each of which is formed integral with one of said last named arms; of a plurality ofrcushioning units, one disposed in each of said pockets.

In witness that I claim the foregoing I have hereunto subscribed my name this 27th dayY of April, 1923. f i Y STACY B. HASELTINE.

Witnesses:

FRANCES SAVAGE, HARRIETTE M, DEAMER. 

